STM32 ARM development board (STM32F103C8T6 Blue Pill)

Chip Description: STM32F103C8T6 Package Type: LQFP. Number of pins: 48. Kernel: ARM Cortex-M3. Operating frequency: 72MHz. Storage resources: 64K Byte Flash, 20KByte SRAM. Interface Resources: 2x SPI, 3x USART, 2x I2C, 1x CAN, 37x I / O ports, Analog-to-digital conversion: 2x ADC (12-bit / 16-channel). Timers: 3 general timers and 1 advanced timer. Debug Download: Support JTAG / SWD debug interface to download, support for IAP. RT9193: 3.3V regulator chip, a maximum output of 300mA. Interface Description: SWD interface: support for simulation, download and debug. Mirco USB interface: power supply and USB communication, do not support the download. USART1 interface: USART1 can be used to download the program, or use the USART1 for communication. MCU pin interface: leads all I / O port pins, easy to connect with peripherals. 5, 5V, and 3.3V power input and output interface: commonly used in external power supply, or with other modules for common ground treatment. Other Device Description: Power LED (PWR): Power indicator status, can determine whether the power supply is stable. The user LED (PC13): to facilitate the I / O output test or indicate the program running. Start jumping choose programming mode: (1, the user flash memory 2, SRAM 3, system memory). Reset button: reset chip for the user program. 8M Crystal: The frequency can be set to make the system clocked at 72MHz. 32.768KHz Crystal: Available for built-in RTC, or for calibration.